You have given me some great websites to continue my search for him.
I have suspected for awhile that he is the son of John Armit & Eliza Gifford. I just don't have any proof. Since he was in the military, this may be my only source of information to his parentage.
I only glanced at the Cantwell Memorials page and saw a John Armit from Newtown Park. He actually owned the home that is now the nursing home and is the brother to the direct line I am researching. Is this the same person? On the online information for Cantwell Memorials,I did not see the reference to "John Armit, Church of Ireland, St. Patrick's". If you can look this up later, I would be very grateful.
I cannot put the William Armit in the 1871 census in our direct line, but since he was from Dublin Ireland and in the military, he could very well be from a branch. I will hold onto his information for future reference.
Thank you very much for your help and websites to search.